Tests Runtime.terminateExecution on pause

Running test: testTerminateOnDebugger

Running test: testTerminateAtBreakpoint
{
    error : {
        code : -32000
        message : Execution was terminated
    }
    id : <messageId>
}

Running test: testTerminateRuntimeEvaluateOnCallFrame
{
    id : <messageId>
    result : {
        result : {
            description : 1
            type : number
            value : 1
        }
    }
}
{
    id : <messageId>
    result : {
    }
}
{
    error : {
        code : -32000
        message : Execution was terminated
    }
    id : <messageId>
}
{
    description : 43
    type : number
    value : 43
}
